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                    4.3 目标规划
            
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                    4.5 动态规划
            
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                    4.6 排队论
            
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                    4.7 博弈论
            
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                    1.1 策略模式
            
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                    1.2 原型模式
            
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                    1.4 工厂模式
            
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                    1.5 桥接模式
            
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                    1.6 组合模式
            
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                    1.7 门面模式
            
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                    1.8 适配器模式
            
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                    1.9 装饰者模式
            
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                    1.10 享元模式
            
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                    1.11 代理模式
            
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                    1.12 中间件模式
            
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                    2.1 长连接
            
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                    2.2 MQ
            
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                    3.1.1 原理及构成
            
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                    3.1.2 异步机制
            
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                    3.1.5 koa源码分析
            
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                    3.1.6 libuv网络库应用
            
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                    3.1.7 性能调优
            
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                    3.1.8 其他: Node爬虫
            
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                    3.1.9 其他: Node编写Mapreduce
            
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                    3.2 C/C++
            
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                    3.2.1 面向对象
            
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                    3.2.3 线程管理
            
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                    3.2.4 内存管理
            
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                    3.2.5 网络编程
            
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                    3.2.6 构建工具
            
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        <li class="chapter " data-level="1.3.3.2.7" data-path="../c/thread_pool.html">
            
                <a href="../c/thread_pool.html">
            
                    
                    3.2.7 其他: 线程池
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

            </ul>
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.4" data-path="../../engineering/ci_deplopment/">
            
                <a href="../../engineering/ci_deplopment/">
            
                    
                    三 搭建部署
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.1" data-path="../../engineering/ci_deplopment/test.html">
            
                <a href="../../engineering/ci_deplopment/test.html">
            
                    
                    3.1 测试
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.1.1" data-path="../../engineering/ci_deplopment/test/unit_testing.html">
            
                <a href="../../engineering/ci_deplopment/test/unit_testing.html">
            
                    
                    3.1.1 单元测试
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.1.2" data-path="../../engineering/ci_deplopment/test/stress_testing.html">
            
                <a href="../../engineering/ci_deplopment/test/stress_testing.html">
            
                    
                    3.1.2 压力测试
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.4.2" data-path="../../engineering/ci_deplopment/ci_readme.html">
            
                <a href="../../engineering/ci_deplopment/ci_readme.html">
            
                    
                    3.2 集成
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.2.1" data-path="../../engineering/ci_deplopment/ci/gitlab_ci.html">
            
                <a href="../../engineering/ci_deplopment/ci/gitlab_ci.html">
            
                    
                    3.2.1 GitLab CI
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.2.2" data-path="../../engineering/ci_deplopment/ci/spinnaker.html">
            
                <a href="../../engineering/ci_deplopment/ci/spinnaker.html">
            
                    
                    3.2.2 Spinnaker
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.4.3" data-path="../../engineering/ci_deplopment/build.html">
            
                <a href="../../engineering/ci_deplopment/build.html">
            
                    
                    3.3 部署
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.3.1" data-path="../../engineering/ci_deplopment/k8s/k8s.html">
            
                <a href="../../engineering/ci_deplopment/k8s/k8s.html">
            
                    
                    3.3.1 k8s
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.3.2" data-path="../../engineering/ci_deplopment/rancher/rancher.html">
            
                <a href="../../engineering/ci_deplopment/rancher/rancher.html">
            
                    
                    3.3.2 rancher
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.3.3" data-path="../../engineering/ci_deplopment/swarm/swarm.html">
            
                <a href="../../engineering/ci_deplopment/swarm/swarm.html">
            
                    
                    3.3.3 swarm
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.4.4" data-path="../../engineering/ci_deplopment/maintenance.html">
            
                <a href="../../engineering/ci_deplopment/maintenance.html">
            
                    
                    3.4 监控
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.4.1" data-path="../../engineering/ci_deplopment/monitor.html">
            
                <a href="../../engineering/ci_deplopment/monitor.html">
            
                    
                    3.4.1 容器监控
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.4.2" data-path="../../engineering/ci_deplopment/trace.html">
            
                <a href="../../engineering/ci_deplopment/trace.html">
            
                    
                    3.4.2 系统监控
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.4.3" data-path="../../engineering/ci_deplopment/app1.md">
            
                <span>
            
                    
                    3.4.2 应用监控
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.4.5" data-path="../../engineering/ha/ha.html">
            
                <a href="../../engineering/ha/ha.html">
            
                    
                    3.5 高可用
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.5.1" data-path="../../engineering/ha/client.html">
            
                <a href="../../engineering/ha/client.html">
            
                    
                    3.5.1 接入层高可用
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.5.2" data-path="../../engineering/ha/service.html">
            
                <a href="../../engineering/ha/service.html">
            
                    
                    3.5.2 服务层高可用
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.5.3" data-path="../../engineering/ha/share.html">
            
                <a href="../../engineering/ha/share.html">
            
                    
                    3.5.3 存储层高可用
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.4.6" data-path="../../engineering/ci_deplopment/hc/hc.html">
            
                <a href="../../engineering/ci_deplopment/hc/hc.html">
            
                    
                    3.6 高并发
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.6.1" data-path="../../engineering/ci_deplopment/hc/dns.html">
            
                <a href="../../engineering/ci_deplopment/hc/dns.html">
            
                    
                    3.6.1 基于DNS的负载均衡
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.6.2" data-path="../../engineering/ci_deplopment/hc/lvs.html">
            
                <a href="../../engineering/ci_deplopment/hc/lvs.html">
            
                    
                    3.6.2 基于Lvs的负载均衡
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.6.3" data-path="../../engineering/ci_deplopment/hc/haproxy.html">
            
                <a href="../../engineering/ci_deplopment/hc/haproxy.html">
            
                    
                    3.6.3 基于haproxy的负载均衡
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.5" >
            
                <span>
            
                    
                    四 架构模式
            
                </span>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.5.1" >
            
                <span>
            
                    
                    1 微服务架构设计与实践
            
                </span>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.5.1.1" data-path="spring-cloud.html">
            
                <a href="spring-cloud.html">
            
                    
                    1.1 微服务概况
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.1.2" data-path="spring-eureka.html">
            
                <a href="spring-eureka.html">
            
                    
                    1.2 服务注册及发现
            
                </a>
            

            
        </li>
    
        <li class="chapter active" data-level="1.5.1.3" data-path="spring-feign.html">
            
                <a href="spring-feign.html">
            
                    
                    1.3 服务调用
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.1.4" data-path="spring-zuul.html">
            
                <a href="spring-zuul.html">
            
                    
                    1.4 网关及负载均衡
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.1.5" data-path="spring-hystrix.html">
            
                <a href="spring-hystrix.html">
            
                    
                    1.5 熔断、限流、扩缩容
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.1.6" data-path="spring-config.html">
            
                <a href="spring-config.html">
            
                    
                    1.6 云配置中心
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.1.7" data-path="zipkin-tracing.html">
            
                <a href="zipkin-tracing.html">
            
                    
                    1.7 分布式链路追踪
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.1.8" data-path="swagger.html">
            
                <a href="swagger.html">
            
                    
                    1.8 接口文档管理
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.5.2" data-path="../../domain/">
            
                <a href="../../domain/">
            
                    
                    2 领域驱动模型
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.5.2.1" data-path="../../domain/domain.html">
            
                <a href="../../domain/domain.html">
            
                    
                    2.1 领域--Domain
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.2.2" data-path="../../domain/entity.md">
            
                <span>
            
                    
                    2.2 领域实体--Entity
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.2.3" data-path="../../domain/object.html">
            
                <a href="../../domain/object.html">
            
                    
                    2.3 值对象--Value Object
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.2.4" data-path="../../domain/aggregate.html">
            
                <a href="../../domain/aggregate.html">
            
                    
                    2.4 聚合--Aggregate
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.2.5" data-path="../../domain/service.html">
            
                <a href="../../domain/service.html">
            
                    
                    2.5 服务--Services
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.2.6" data-path="../../domain/event.html">
            
                <a href="../../domain/event.html">
            
                    
                    2.6 领域事件--Event
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.2.7" data-path="../../domain/framework.html">
            
                <a href="../../domain/framework.html">
            
                    
                    2.7 几种常见的DDD架构
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.5.3" >
            
                <span>
            
                    
                    3 架构技术的演化与趋势
            
                </span>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.5.3.1" >
            
                <span>
            
                    
                    3.1 架构技术的发展历史及现状
            
                </span>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.3.2" >
            
                <span>
            
                    
                    3.2 Serverless无服务架构概念
            
                </span>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.3.3" >
            
                <span>
            
                    
                    3.3 ServerMesh网格服务概念
            
                </span>
            

            
        </li>
    

            </ul>
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.6" >
            
                <span>
            
                    
                    五 其他
            
                </span>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.6.1" data-path="../../story/talk.html">
            
                <a href="../../story/talk.html">
            
                    
                    5.1 小伙子,放松!
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

    

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                                <h3 id="&#x4E00;&#x3001;&#x7B80;&#x4ECB;">&#x4E00;&#x3001;&#x7B80;&#x4ECB;</h3>
<p>&#xA0;&#xA0;&#xA0;&#xA0;&#x670D;&#x52A1;&#x95F4;&#x8C03;&#x7528;&#x53EF;&#x91C7;&#x7528;Thrift&#x3001;gRpc&#x3001;http&#x7B49;&#x65B9;&#x5F0F;&#xFF0C;&#x5176;&#x4E2D;Thrift&#x57FA;&#x4E8E;tcp&#x3001;gRpc&#x57FA;&#x4E8E;HTTP/2&#x5B9E;&#x73B0;&#x3001;&#x4E24;&#x8005;&#x7684;&#x6027;&#x80FD;&#x6BD4;HTTP&#x90FD;&#x66F4;&#x9AD8;&#xFF0C;&#x800C;&#x5728;&#x7CFB;&#x7EDF;&#x4E0D;&#x7B97;&#x590D;&#x6742;&#x3001;&#x5BF9;&#x6027;&#x80FD;&#x8981;&#x6C42;&#x4E0D;&#x592A;&#x4E25;&#x683C;&#x7684;&#x573A;&#x666F;&#x4E0B;http&#x88AB;&#x5E7F;&#x6CDB;&#x91C7;&#x7528;&#x3002;<code>Spring Cloud Feign</code>&#x662F;&#x4E00;&#x4E2A;&#x58F0;&#x660E;&#x5F0F;&#x7684;&#x4F2A;Http&#x5BA2;&#x6237;&#x7AEF;&#xFF0C;&#x5B83;&#x4F7F;&#x5F97;&#x5199;Http&#x5BA2;&#x6237;&#x7AEF;&#x53D8;&#x5F97;&#x66F4;&#x7B80;&#x5355;&#x3002;&#x4F7F;&#x7528;Feign&#xFF0C;&#x53EA;&#x9700;&#x8981;&#x521B;&#x5EFA;&#x4E00;&#x4E2A;&#x63A5;&#x53E3;&#x5E76;&#x6CE8;&#x89E3;&#x3002;&#x5B83;&#x5177;&#x6709;&#x53EF;&#x63D2;&#x62D4;&#x7684;&#x6CE8;&#x89E3;&#x7279;&#x6027;&#xFF0C;Feign&#x652F;&#x6301;&#x53EF;&#x63D2;&#x62D4;&#x7684;&#x7F16;&#x7801;&#x5668;&#x548C;&#x89E3;&#x7801;&#x5668;&#x3002;Feign&#x9ED8;&#x8BA4;&#x96C6;&#x6210;&#x4E86;Ribbon&#xFF0C;&#x5E76;&#x548C;Eureka&#x7ED3;&#x5408;&#xFF0C;&#x5B9E;&#x73B0;&#x4E86;&#x8D1F;&#x8F7D;&#x5747;&#x8861;&#x7684;&#x6548;&#x679C;.</p>
<h3 id="&#x4E8C;&#x3001;&#x793A;&#x4F8B;">&#x4E8C;&#x3001;&#x793A;&#x4F8B;</h3>
<h4 id="21-&#x914D;&#x7F6E;&#x53CA;&#x4F18;&#x5316;&#x8C03;&#x7528;">2.1 &#x914D;&#x7F6E;&#x53CA;&#x4F18;&#x5316;&#x8C03;&#x7528;</h4>
<p>&#xA0;&#xA0;&#xA0;&#xA0;Feign&#x662F;spring cloud&#x4E2D;&#x670D;&#x52A1;&#x6D88;&#x8D39;&#x7AEF;&#x7684;&#x8C03;&#x7528;&#x6846;&#x67B6;,&#x901A;&#x5E38;&#x4E0E;ribbon,hystrix&#x7B49;&#x7EC4;&#x5408;&#x4F7F;&#x7528;&#xFF0C;&#x5728;&#x9ED8;&#x8BA4;&#x60C5;&#x51B5;&#x4E0B; spring cloud feign&#x5728;&#x8FD0;&#x884C;&#x5728;&#x5404;&#x4E2A;&#x5B50;&#x670D;&#x52A1;&#x4E4B;&#x95F4;&#x7684;&#x8C03;&#x7528;&#xFF0C;&#x5176;http&#x7EC4;&#x4EF6;&#x4F7F;&#x7528;&#x7684;&#x662F;jdk&#x7684;HttpURLConnection&#xFF0C;&#x6CA1;&#x6709;&#x4F7F;&#x7528;&#x7EBF;&#x7A0B;&#x6C60;&#xFF0C;&#x6240;&#x4EE5;&#x5728;&#x7F51;&#x5173;&#x7684;ribbon&#x914D;&#x7F6E;&#x4E2D;&#xFF0C;&#x53EF;&#x4EE5;&#x57FA;&#x4E8E;&#x4EE5;&#x4E0B;&#x4E24;&#x79CD;&#x65B9;&#x5F0F;&#x4F18;&#x5316;Feign&#x63D0;&#x5347;&#x6027;&#x80FD;</p>
<ul>
<li>&#x65B9;&#x5F0F;&#x4E00;&#x3001;Appach httpclient&#x7EBF;&#x7A0B;&#x6C60;</li>
</ul>
<pre><code class="lang-yaml"><span class="hljs-comment"># ribbon&#x914D;&#x7F6E;</span>
<span class="hljs-attr">ribbon:</span>
<span class="hljs-attr">  MaxAutoRetries:</span> <span class="hljs-number">0</span>
<span class="hljs-attr">  MaxAutoRetriesNextServer:</span> <span class="hljs-number">1</span>
<span class="hljs-attr">  httpclient:</span>
<span class="hljs-attr">    enabled:</span> <span class="hljs-literal">true</span>
<span class="hljs-attr">  okhttp:</span>
<span class="hljs-attr">    enabled:</span> <span class="hljs-literal">false</span>
<span class="hljs-attr">  ReadTimeout:</span> <span class="hljs-number">5000</span> <span class="hljs-comment">#&#x8BFB;&#x53D6;&#x8D85;&#x65F6;</span>
</code></pre>
<ul>
<li>&#x65B9;&#x5F0F;&#x4E8C;&#x3001;okhttp</li>
</ul>
<pre><code class="lang-yaml"><span class="hljs-comment"># ribbon&#x914D;&#x7F6E;</span>
<span class="hljs-attr">ribbon:</span>
<span class="hljs-attr">  MaxAutoRetries:</span> <span class="hljs-number">0</span>
<span class="hljs-attr">  MaxAutoRetriesNextServer:</span> <span class="hljs-number">1</span>
<span class="hljs-attr">  httpclient:</span>
<span class="hljs-attr">    enabled:</span> <span class="hljs-literal">false</span>
<span class="hljs-attr">  okhttp:</span>
<span class="hljs-attr">    enabled:</span> <span class="hljs-literal">true</span>
<span class="hljs-attr">  ReadTimeout:</span> <span class="hljs-number">5000</span> <span class="hljs-comment">#&#x8BFB;&#x53D6;&#x8D85;&#x65F6;</span>
</code></pre>
<p>&#x540C;&#x65F6;</p>
<pre><code class="lang-java">dependencies {
    compile(<span class="hljs-string">&quot;org.springframework.cloud:spring-cloud-starter-config&quot;</span>)
    compile(<span class="hljs-string">&apos;org.springframework.cloud:spring-cloud-starter-zuul&apos;</span>)
    compile(<span class="hljs-string">&apos;org.springframework.cloud:spring-cloud-starter-eureka&apos;</span>)
    compile(<span class="hljs-string">&apos;org.springframework.cloud:spring-cloud-starter-feign&apos;</span>)
    compile(group: <span class="hljs-string">&apos;io.github.openfeign&apos;</span>, name: <span class="hljs-string">&apos;feign-httpclient&apos;</span>, version: <span class="hljs-string">&apos;9.5.0&apos;</span>)<span class="hljs-comment">//&#x65B9;&#x5F0F;&#x4E00;</span>
    compile(group: <span class="hljs-string">&apos;io.github.openfeign&apos;</span>, name: <span class="hljs-string">&apos;feign-okhttp&apos;</span>, version: <span class="hljs-string">&apos;9.5.1&apos;</span>)<span class="hljs-comment">//&#x65B9;&#x5F0F;&#x4E8C;</span>
}
</code></pre>
<pre><code class="lang-java"><span class="hljs-keyword">import</span> org.springframework.cloud.netflix.feign.EnableFeignClients;
<span class="hljs-keyword">import</span> org.springframework.web.cors.CorsConfiguration;
<span class="hljs-keyword">import</span> org.springframework.web.cors.UrlBasedCorsConfigurationSource;

<span class="hljs-meta">@EnableZuulProxy</span>
<span class="hljs-meta">@EnableCircuitBreaker</span>
<span class="hljs-meta">@Import</span>(BaseConfig.class)
<span class="hljs-meta">@EnableAutoConfiguration</span>(exclude = {DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class})
<span class="hljs-meta">@EnableFeignClients</span>(defaultConfiguration = FeignConfig.class)
<span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">ZuulApplication</span> </span>{

    <span class="hljs-meta">@Autowired</span>
    <span class="hljs-keyword">private</span> BeanFactory beanFactory;

    <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">void</span> <span class="hljs-title">main</span><span class="hljs-params">(String[] args)</span> <span class="hljs-keyword">throws</span> Exception </span>{
        SpringApplication.run(ZuulApplication.class, args);
    }


    <span class="hljs-comment">/* &#x8DE8;&#x57DF;&#x8BBE;&#x7F6E; */</span>
    <span class="hljs-meta">@Bean</span>
    <span class="hljs-function"><span class="hljs-keyword">public</span> CorsFilter <span class="hljs-title">corsFilter</span><span class="hljs-params">()</span> </span>{
        <span class="hljs-keyword">final</span> UrlBasedCorsConfigurationSource source = <span class="hljs-keyword">new</span> UrlBasedCorsConfigurationSource();
        <span class="hljs-keyword">final</span> CorsConfiguration config = <span class="hljs-keyword">new</span> CorsConfiguration();
        config.setAllowCredentials(<span class="hljs-keyword">true</span>);
        config.addAllowedOrigin(<span class="hljs-string">&quot;*&quot;</span>);
        config.addAllowedHeader(<span class="hljs-string">&quot;*&quot;</span>);
        config.addAllowedMethod(<span class="hljs-string">&quot;OPTIONS&quot;</span>);
        config.addAllowedMethod(<span class="hljs-string">&quot;HEAD&quot;</span>);
        config.addAllowedMethod(<span class="hljs-string">&quot;GET&quot;</span>);
        config.addAllowedMethod(<span class="hljs-string">&quot;PUT&quot;</span>);
        config.addAllowedMethod(<span class="hljs-string">&quot;POST&quot;</span>);
        config.addAllowedMethod(<span class="hljs-string">&quot;DELETE&quot;</span>);
        config.addAllowedMethod(<span class="hljs-string">&quot;PATCH&quot;</span>);
        source.registerCorsConfiguration(<span class="hljs-string">&quot;/**&quot;</span>, config);
        <span class="hljs-keyword">return</span> <span class="hljs-keyword">new</span> CorsFilter(source);
    }
}
</code></pre>
<p>&#xA0;&#xA0;&#xA0;&#xA0;&#x76F8;&#x5BF9;&#x800C;&#x8A00;okhttp&#x6709;&#x4E00;&#x4E0B;&#x7279;&#x70B9;:</p>
<pre><code>1.&#x652F;&#x6301;http&#x548C;https&#x534F;&#x8BAE;,api&#x76F8;&#x540C;,&#x6613;&#x7528;; 
2.http&#x4F7F;&#x7528;&#x7EBF;&#x7A0B;&#x6C60;,https&#x4F7F;&#x7528;&#x591A;&#x8DEF;&#x590D;&#x7528;; 
3.okhttp&#x652F;&#x6301;&#x540C;&#x6B65;&#x548C;&#x5F02;&#x6B65;&#x8C03;&#x7528;; 
4.&#x652F;&#x6301;&#x666E;&#x901A;form&#x548C;&#x6587;&#x4EF6;&#x4E0A;&#x4F20;form; 
5.&#x63D0;&#x4F9B;&#x4E86;&#x62E6;&#x622A;&#x5668;,&#x64CD;&#x4F5C;&#x8BF7;&#x6C42;&#x548C;&#x54CD;&#x5E94;(&#x65E5;&#x5FD7;,&#x8BF7;&#x6C42;&#x5934;,body&#x7B49;); 
6.okhttp&#x53EF;&#x4EE5;&#x8BBE;&#x7F6E;&#x7F13;&#x5B58;
</code></pre><h4 id="22-&#x8FDC;&#x7A0B;&#x8C03;&#x7528;&#x53CA;&#x7194;&#x65AD;&#x914D;&#x7F6E;">2.2 &#x8FDC;&#x7A0B;&#x8C03;&#x7528;&#x53CA;&#x7194;&#x65AD;&#x914D;&#x7F6E;</h4>
<p>&#xA0;&#xA0;&#xA0;&#xA0;&#x8C03;&#x7528;&#x8FDC;&#x7A0B;url:</p>
<pre><code class="lang-java"><span class="hljs-keyword">package</span> com.joseph.springcloud.zuul;

<span class="hljs-keyword">import</span> com.joseph.springcloud.zuul.dto.UserInfo;
<span class="hljs-keyword">import</span> org.springframework.cloud.netflix.feign.FeignClient;
<span class="hljs-keyword">import</span> org.springframework.web.bind.annotation.GetMapping;
<span class="hljs-keyword">import</span> com.joseph.springcloud.zuul.impl.UserClientHystrix;

<span class="hljs-keyword">import</span> java.util.List;

<span class="hljs-meta">@FeignClient</span>(name = <span class="hljs-string">&quot;demo-service&quot;</span>, url = <span class="hljs-string">&quot;${service.url.demo:#{&apos;&apos;}}&quot;</span>, fallback = UserClientHystrix.class)
<span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">interface</span> <span class="hljs-title">UserClient</span> </span>{
    <span class="hljs-meta">@GetMapping</span>(value = <span class="hljs-string">&quot;/users&quot;</span>)
    <span class="hljs-function">List&lt;UserInfo&gt; <span class="hljs-title">getUserBlackList</span><span class="hljs-params">()</span></span>;
}
</code></pre>
<p>&#xA0;&#xA0;&#xA0;&#xA0;UserClientHystrix&#x7EE7;&#x627F;&#x63A5;&#x53E3;UserClient&#xFF0C;&#x5F53;&#x53D1;&#x751F;&#x8D85;&#x65F6;&#x548C;&#x8C03;&#x7528;&#x9519;&#x8BEF;&#x65F6;(&#x8FBE;&#x5230;Hystrix&#x7684;Metric&#x7684;&#x7EDF;&#x8BA1;&#x9608;&#x503C;&#x624D;&#x4F1A;&#x65AD;&#x8DEF;)&#xFF0C;&#x56DE;&#x8C03;&#x8FD0;&#x884C;&#x5982;&#x4E0B;&#x903B;&#x8F91;:</p>
<pre><code class="lang-java"><span class="hljs-keyword">package</span> com.ytx.springcloud.zuul.impl;

<span class="hljs-keyword">import</span> com.ytx.springcloud.zuul.config.UserConfig;
<span class="hljs-keyword">import</span> com.ytx.springcloud.zuul.UserClient;
<span class="hljs-keyword">import</span> com.ytx.springcloud.zuul.dto.UserInfo;
<span class="hljs-keyword">import</span> org.springframework.stereotype.Service;

<span class="hljs-keyword">import</span> java.util.List;

<span class="hljs-comment">/**
 * &#x5FAE;&#x670D;&#x52A1;&#x4E0D;&#x53EF;&#x7528;&#x65F6;&#xFF0C;&#x56DE;&#x8C03;&#x8FD4;&#x56DE;&#x5907;&#x7528;&#x914D;&#x7F6E;
 */</span>
<span class="hljs-meta">@Service</span>
<span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">UserClientHystrix</span> <span class="hljs-keyword">implements</span> <span class="hljs-title">UserClient</span> </span>{

    <span class="hljs-keyword">private</span> UserConfig userConfig;

    UserClientHystrix(<span class="hljs-keyword">final</span> UserConfig userConfig) {
        <span class="hljs-keyword">this</span>.userConfig = UserConfig;
    }

    <span class="hljs-meta">@Override</span>
    <span class="hljs-function"><span class="hljs-keyword">public</span> List&lt;UserInfo&gt; <span class="hljs-title">getUserBlackList</span><span class="hljs-params">()</span> </span>{
        List&lt;UserInfo&gt; blackList = userConfig.getUserBlackList();
        <span class="hljs-keyword">return</span> blackList;
    }

}
</code></pre>
<p>&#xA0;&#xA0;&#xA0;&#xA0;&#x4E0A;&#x8FF0;&#x8FC7;&#x7A0B;&#x5B9E;&#x73B0;&#x4E86;&#x5F53;&#x670D;&#x52A1;&#x4E0D;&#x53EF;&#x7528;&#x65F6;&#xFF0C;&#x901A;&#x8FC7;&#x7EC4;&#x4EF6;Hystrix&#x3001;Feign&#x5B9E;&#x73B0;&#x8C03;&#x7528;&#x7684;&#x9AD8;&#x53EF;&#x7528;&#xFF0C;&#x540C;&#x65F6;Feign&#x7684;&#x7194;&#x65AD;&#x5F00;&#x542F;&#x9700;&#x8981;&#x5728;&#x914D;&#x7F6E;&#x4E2D;&#x6307;&#x5B9A;&#xFF0C;&#x5982;&#x4E0B;:</p>
<pre><code class="lang-yaml"><span class="hljs-attr">feign:</span>
<span class="hljs-attr">  hystrix:</span>
<span class="hljs-attr">    enabled:</span> <span class="hljs-literal">true</span>
</code></pre>
<p>&#x6CE8;: &#x5728;&#x7F51;&#x5173;zuul&#x5904;&#xFF0C;ribbon&#x8D85;&#x65F6;&#x914D;&#x7F6E;&#x901A;&#x5E38;&#x8981;&#x5C0F;&#x4E8E;hystrix&#x8D85;&#x65F6;&#x914D;&#x7F6E;&#xFF0C;&#x5426;&#x5219;ribbon&#x4E0D;&#x4F1A;&#x751F;&#x6548;</p>
<h3 id="&#x4E09;&#x3001;&#x53C2;&#x8003;">&#x4E09;&#x3001;&#x53C2;&#x8003;</h3>
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<li><a href="https://github.com/OpenFeign/feign" target="_blank">1&#x3001;Feign</a></li>
</ul>
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